<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=d, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            background-image: url('./css/bg.gif');
            width: 100%;
            height: 700px;
            background-size: 200px;
            background-repeat: no-repeat;
            background-position: center ;

        }

    </style>
</head>
<body>
    <div class="box">

    </div>
</body>
</html>